Laguna PowerFlo 1000 External Biological Filter

Laguna PowerFlo External Biological Filter 1000 is ideal for largerponds up to 1000 US Gallons (4500L). The filter features an efficient3-tiered filtering system that provides complete mechanical andbiological filtration. The top tray houses pumice filter material(included) which provides mechanical and biological filtration. Belowthe top tray, a foam pad (also included) performs mechanicalfiltration. The bottom tray is designed to hold the biological media ofyour choice, such as Laguna Bio-Max(not included). The trays haveconvenient handles which allow you to remove them easily. Otherfeatures include a built-in drain plug and two outlets for creatingwaterfalls or connecting to other pond equipment such as a UVSterilizer. The filter is designed to be installed outside the pond,which allows easy access for maintenance. A Universal Click-FitCoupling for 3/4", 1" and 1 1/4" inlet tubing is also included.